Signal lamp



FIG. 1 is a perspective view of a signal lamp showing my new design;

FIG. 2 is a front elevational view of the signal lamp of FIG. 1;

FIG. 3 is a rear side elevational view of the signal lamp of FIG. 1;

FIG. 4 is a left side elevational view of the signal lamp of FIG. 1;

FIG. 5 is a right side elevational view of the signal lamp of FIG. 1;

FIG. 6 is a top plan view of the signal lamp of FIG. 1; and,

FIG. 7 is a bottom plan view of the signal lamp of FIG. 1.

The broken lines shown in the drawings illustrate portions of the signallamp that form no part of the claimed design.

CLAIM The ornamental design for a signal lamp, as shown and described.